Wood-molding machine



(No Model.) 2 sheets-Sheet 1.

W. J. SMITH.

` WOOD MOLDING MACHINE.

No. 878,288. l Patented Jan. 10, 1888.

NIIIIIIH fdl N. PETERS. Phawumogmphcr, whi nnnnn c.

(No Model.)` 2 Sheets-Sheet 2.

W. J. SMITH.

Woon MOLDING MACHINE.

No. 376,268. Patented Jan. 10, 1888.-

' the T-shaped grooves a.

UNITED STATES A PATENT Ormea.

`VVALTE'R J. lSMITH, OF MPHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 376,268, datedJanuary10, 1889.

appncauonniea May 2, isa?. sentano. 236,753. (No moda.)

To @ZZ whom, it may concern:

Be it known that I, WALTER J. SMITH, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a new and usefulImprovement in Wood-Molding Machines, of which the following isafull,clear, and exact description, reference being had to theaccompanyingdrawings, and to the letters of reference marked thereon.

The object of my invention is to provide adjustable bearings for curvedwork, as will be fully set forth in the following specification andclaims.

In the drawings, Figure l is a front view of a wood-molding machine.Fig. 2 is a transverse section on the line .fr m of Fig. l. Fig. 3 is avertical section on the line y y of Fig. 1. Figs. 4, 5, and 6 aredetached details; and Figs. 7, 8, and 9 illustrate a modification, aswill be hereinafter explained.

Similar letters of reference indicate similar' parts in the respectivefigures.

A is a plate attached to the front of the frame of a wood-moldingmachine, having the T-shaped grooves a formed therein. B is an arm orrest forming apart of the casting C, which is adapted to be bolted totheplate A. This arm B is provided with a dovetailed groove, b, and a hole,b', adapted'to receive a bolt, b2. (See Fig. 7.)

D lis a'doveta'iled slide, having arms d at each end, which formbearings for a roller, E. (See Fig. 4.) This slide is adapted to fit inthe dovetailed groove b, and the roller E will form a centralbearing,bywhich the other rollers, F, can be adj usted vto suit a curve of anyradius, the casting C being bolted to the plate A, so as to bring theroller E directly in a linez with the spindle c, which carries thecuttingtool. The rollers F are arranged as follows, (see Fig. 5:)T-headed bolts f are inserted in Apiece of pipe, f, somewhat longer thanthe roller F, (which is also a piece of pipe,) is fitted over t-he boltf, and the roller F is loosely placed over Vthe pipe f. By operating`the nut f? the boltf can be'firmly secured at auy'point in the T-shaped groove in which it is inserted, and thus the rollers F can bevertically adjusted in their respective grooves to suit a curve of anyradius. The front plate is provided with it the tool-spindle and thecutting-tool, can be raised or lowered, as the operator desires.

Referring now to Figs. 7, 8, and 9, I will state that heretofore it hasbeen exceedingly difficult to mold pieces of wood having an ellipticalform, owing to the irregularity of the curve, and it has been the customto make elliptical moldings in three or more pieces.

As a consequence, the work at-the joints has always had a more or lessimperfect appearance. By myinvention, as illustrated in Figs. 7, 8, and9, I have overcome this difficulty, as I will now proceed to explain. Gis a bracket, its base having a dovetail, g, adapted to tit in thedovetailed groove" b Aof the rest B. The lower part of the face of thebracket is cutout, as shown at g', so as to form ashoulder. The bracketG is also provided with a' slot, g2.

H represents a piece of wood ofan elliptical form. To this piece of wooda narrow strip of wood, h, is temporarily attached, by nails orotherwise.`

The operation of molding elliptical work is as follows: The bracket G isinserted in the dovetailed groove b, and adjusted, by means of the boltb2 and slot g2, to suit the thickness of the piece of wood to be molded.The piece of wood H is then inserted between the face of the bracket andthe cutting-tool, the narrow strip h tting in the shoulder g',V and theupper surface of the arm B forming a bearing for the piece of wood H. Itwill be readily seen that the piece of wood will be held tlrmly inposition against the cuttingtool, and that the bearing will be uniform,no matter how much theV curve may vary, and that elliptical moldings canbe made in one piece, the work being uniform throughout.

Having described my invention, I claim IOO 1. In a wood-molding machine,a frontplatc provided with a series of vertical parallel grooves havinga series of rollers whose axes are horizontal, adjnstably retainedtherein,

5 combined with a rotary cutter, substantially as described.

2. In a Wood-molding machine, a front plate provided with a series ofparallel grooves in combination with rollers adjustably retained Iotherein, and an arm, B, )rovided with an adjusting-jaw having a recess,g', within which a guide-strip upon the molding is adapted to pass,substantially as described.

3. In a Wood-molding machine, a front plate provided with a series ofopen-ended vertical i5 parallel grooves, a, in combination withsupporting-rollers having a bolt extending longitudinally through andforming an axis for the rollers, one end of the bolt being provided witha head and the opposite end with a thread zo and nut, for the purposesubstantially as set forth.

In testimony whereofl hereunto set my hand and seal.

WALTER J. SMITH. [E s] Witnesses:

BENJAMIN SHERRY, FREDERICK M. PILE.

